Quote Originally Posted by Jer View Post
Your hot tub is going to be in your green house? Won't the chemical (Bromine?) evap suspended in the humidity cause issues for the plants?
We use a chlorine based sanitizer, but the air exchange is pretty regular even in the winter, so there shouldn't be any buildup. I thought that the humidity buildup might be an issue, but it's not. We had to open the vents on the old greenhouse during the day the past several winters to keep the temps below 90, except on the coldest days.